Dongfang Yang

collaborators

2 papers

math.GR2026

On prime divisors of character degrees and codegrees

Dongfang Yang

Let $G$ be a finite group, and let $Irr (G)$ denote the set of irreducible complex characters of $G$ . For $I^µ \in {\pm}$ , we define $\mathrm{cd}_Îµ(G)=\{ Ï_Îµ(1)\mid Ï…

math.GR2025

Finite groups of non-prime-power order with exactly four character codegrees

Yu Zeng, Mehdi Ghaffarzadeh, Mohsen Ghasemi +1

For an irreducible complex character $Ï$ of a finite group $G$, the \emph{codegree} of $Ï$ is defined as the ratio $|G : \ker(Ï)| / Ï(1)$, where $\ker(Ï)$ represents…